P008A on Mercedes-Benz: How to Diagnose & Fix
Low Pressure Fuel System Pressure - Too Low
1 Mercedes-Benz model · 1 documented issue · 1 critical
P008A on Mercedes-Benz by model: symptoms, diagnosis and fix
Recall 23V445 directly covers 43,257 model-year 2021-2023 GLC 300 vehicles with fuel-pump impellers that may not meet material specifications. An affected impeller may deform, contact the pump housing and create mechanical resistance; in some instances the fuel pump can shut down and the vehicle can lose propulsion, increasing crash risk. A warning message or rough running may occur before shutdown.
Common Symptoms
- Warning message on the dash
- Rough running
- Loss of drive power while driving
How to Fix
Check the VIN for recall 23V445 and have an authorized Mercedes-Benz dealer replace the fuel-delivery module when eligible. Recall eligibility depends on the VIN.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
P008A code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P008A mean on a Mercedes-Benz?
P008A stands for "Low Pressure Fuel System Pressure - Too Low." Generic OBD-II code, most often seen on direct-injection and diesel vehicles that use both a low-pressure lift pump and a high-pressure pump. The PCM compares the commanded low-side fuel pressure to what the low-pressure fuel sensor reports and sets this code when actual pressure (or fuel volume/flow) falls below the expected value. Because the high-pressure pump is starved, the engine can run lean, misfire, hesitate under load, crank a long time, stall, or go into reduced-power mode. This one should not be ignored - sustained low supply pressure can damage the high-pressure pump. Note that some manufacturers define this code slightly differently. On Mercedes-Benz it is documented across 1 model: GLC.
What are the most common causes of P008A?
The most common causes of P008A are: Weak or failing in-tank fuel pump / lift pump, Clogged fuel filter or restricted fuel line, Faulty low-pressure fuel or fuel rail pressure sensor giving a false low reading, Leaking fuel line, injector, or pressure regulator on the low-pressure side, Low fuel level or contaminated/wrong fuel, Fuel pump control module or wiring/relay fault. The specific cause varies by vehicle.
How much does it cost to fix P008A on a Mercedes-Benz?
Repair costs vary widely with the root cause and Mercedes-Benz model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.